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The combination of greatly improved sound systems, a readily available stream of information, software that enabled easy creation of content, and the ability to have these presentations displayed on large screens have all driven the industry to its current position.
This system is directed at the audience to so they can hear it. “PA” originally meant “public address”.
This system is typically directed at the stage area to enable performers to hear specifically what they wish to hear to enable optimum performance.
This system is to enhance the “Main PA” in large spaces. It is called a “delay” due to the fact that the audio signal to this system is delayed to allow the sound waves to be in phase with those of the Main PA.
Feedback is a “loop” through the audio system that is created when a microphone can “hear” the speakers – either directly or by a reflection of the sound off the floor, stage, wall, set pieces, or ceiling.
The sound check time is primarily used to find the frequencies that will cause feedback and eliminate them through the use of an equalizer. After feedback is eliminated, the “tone” of the sound is adjusted, and other processing done per the request of the performer.
“ To record an event simply put a tape in the video camera and press record”
Recording video requires access to many elements of production – most importantly lighting, but also audio. To achieve a professional result, the lighting and audio must be set up and monitored at a much higher level than simply for a live event.
“ I can let the AV company know about my presenter’s needs when they arrive”
Strangely a very common misconception, but something as simply as a missing $2 adapter can make it impossible to see or hear a presentation off a laptop. Do they require a DVD player? Is there audio on their Powerpoint? Do they need to switch between computer and video signals? Do they have a computer, or just a jump drive? There are many potentially disastrous pitfalls with this assumption.
A lighting system is one which provides light not only for functionality, but for décor, effect, and entertainment. It includes:
A LAMP – the source of the light
DIMMING – the device that determines the brightness of the source
CONSOLE – tells the dimmer what intensity to make the lamp. For fixtures with additional mechanical features, the console would control the pan, tilt, shutter, colour, gobo, and other features depending on the light
INTELLIGENT FIXTURES – have built in features that could include the ability to dim, strobe, shutter, pan, tilt, adjust colour, gobos, and more. Although very versatile, they are expensive and less reliable than conventional lighting.
Scanners – have a mirror off which the light is reflected. Moving the mirror creates the effect of the light beam moving. These fixtures have a variety of colours and gobos.
Moving Head – these fixtures use motors to physically move the part of the light that contains the lamp and the mechanics. They have a much greater range of motion than scanners, and are available in much more powerful varieties … for a cost.
LED FIXTURES – the newest type of fixture to be available. They are exceptionally efficient, produce little or no heat, are very rugged, and are most often available in arrays that allow colour control. Literally hundreds of types of fixtures and applications
Available in tubes, blocks, tiles, strings, and arrays.
Although typically not as intense as either intelligent or conventional lighting, LED’s produce very vibrant colours.
As the LED fixtures are extremely new relative to other options, many configurations and effects are being invented every day.
At this point, many lighting companies are fighting for a position in this market. The technology is changing rapidly, resulting in a great deal of expense to keep up …